Smoil Swatch Wan..

[Greg]

How and why do you fit them? Whats the story with pikey spec ones with cans and plastic bottles? Are they grand for the job?
Where would I fit one on a VVti 1JZ???


Can a mod fix the thread title? Cheers.

[way2fastforu]

ya fit them to to stop oil vapors goin through the inlet into ur cylinders from your crank case instead it jus vents thro the catch can if it has a breather

[Greg]

Right, so are they essential? I don't remember seeing a breather anywhere on the engine, but do remember my old Starlet GT having one.

[benhachi]

crankcase gases ie "hydrocarbons" lower your octane rating so if you let them out int a catch can instead of back through the intake it highers the fuels resistance to knock which equals win haha them 4 years in fas werent a waste after all!!
as for pikey spec if ya dont mind the look its all the same!!

[way2fastforu]

they connect up to the pcv valve witch plums into ur inlet mani its not a breather it jus recircs oil vapors...but if u get a catch can wit a breather on it itll vent instead of goin back thro the cylinders if ya get me

[benhachi]

Right, so are they essential? I don't remember seeing a breather anywhere on the engine, but do remember my old Starlet GT having one.

should be a pipe going from the rocker cover into the intake somewhere!

[Greg]

crankcase gases ie "hydrocarbons" lower your octane rating so if you let them out int a catch can instead of back through the intake it highers the fuels resistance to knock which equals win haha them 4 years in fas werent a waste after all!!
as for pikey spec if ya dont mind the look its all the same!!

Check out the big brains on Brad. haha Pikey spec it is so. Have plenty of empty cans of Heineken here I can use.

they connect up to the pcv valve witch plums into ur inlet mani its not a breather it jus recircs oil vapors...but if u get a catch can wit a breather on it itll vent instead of goin back thro the cylinders if ya get me

I get ya. Must try and make one Sunday when my little fella goes home.

should be a pipe going from the rocker cover into the intake somewhere!

Ok, cool. Cheers.

[Greg]

Thanks to whoever fixed the thread title. Koonts!


Anybody got a picture of their set ups? Some inspiration.

[eileen]

there are so many different ways to fit catch cans its unreal. and everyone will argue bout every single setup and which is the best...
there is a thread up on NICO.com that has a setup with 2 catch cans which is apparently the proper way to do it.

http://forums.nicoclub.com/zerothrea...tem-on-your-rb

Cliff Notes:
* Crank case must vent pressure that accumulates in the engine.

* Either venting through a breather filter, catch can with breather filter, intake manifold, intake pipe, or exhaust.

* Best results are found when the crank case is experiencing vacuum.

* Vacuum sources generally used are intake manifold and intake leading into the turbo.

* If using the intake manifold as a vacuum source one must use a 1 way check valve to prevent the crank case from being pressurized when under boost. (read: pcv)

* If using the intake pipe leading into the turbo for vacuum, source must be after the MAF (if equipped).

* If using the exhaust pipe exiting the turbo for vacuum, 1 way check valves must be used to prevent exhaust gas circulating back into the crank case.

* If venting the valve cover either through a breather filter or catch can with breather filter(s), the factory PCV valve and intake port must be blocked off preventing those sources from sucking in unmetered air. (read: vacuum leak)

* Plumbing can be made of various materials. If near high levels of heat, use protective/heat reflective material or hoses that can sustain heat. (read: do not have the plastic PVC hose near exhaust)

*Catch cans can be made out of various materials or completed units purchased from various manufacturers.

* Catch cans with internal baffling, steel wool, etc. have found beneficial in removing oil from vented vapor.

* Baffles can also be adapted inside the valve covers of the RB25 and upgraded on the RB26.

This system is as important as anything else to provide optimal performance and reliability. Providing a proper ring and valve seal. This system mentioned above is primarily focused on wet sump oil system RB's which differs when dealing with dry sump'd RB motors (which I will cover in another thread).